Abstract: The present disclosure relates to a sensor board and a display device. The sensor board includes a light-emitting device array (106) in which light-emitting devices is two-dimensionally arranged and loop coils which, in operation, detects a position that has been indicated by an electronic pen, through electromagnetic induction generated with the electronic pen. Line conductors connected to the light-emitting devices of the light-emitting device array is partly used in common as coil conductors formed by the loop coils.

Abstract: Provided is a computer including a host processor which, in operation, generates a stroke image representing a stroke indicated by a series of coordinate data indicating a plurality of positions of a pen on a touch surface and generates a video signal representing the stroke image, a timing controller which, in operation, controls, based on the video signal, a potential of each of a plurality of gate lines provided in a display, and a temporary stroke image generation processor which in operation, generates, in parallel with the host processor, a temporary stroke image representing a same stroke as the stroke of the stroke image, in which the temporary stroke image is superimposed on the video signal before the video signal is supplied to the timing controller.

Abstract: A display system includes a display device including column signal lines, first row signal lines, second row signal lines, first image elements, and second image elements, and a driver circuit including first drive circuits and second drive circuits, in which each of the first drive circuits, in operation, supplies electric charge to two or more corresponding ones of the first image elements during a first period and extracts the electric charge from the two or more corresponding ones of the first image elements during a second period, and each of the second drive circuits, in operation, supplies electric charge to two or more corresponding ones of the second image elements during a third period, or extracts the electric charge from the two or more corresponding ones of the second image elements during a fourth period.

Abstract: A sensor control board in a display apparatus includes a display device and a position detector, the display device including a plurality of image elements each having a first end that receives input of a common potential and a second end that receives input of an individual potential, the image elements being arrayed in a grid pattern, the position detector located either above or below the display device, the position detector detecting a pointed position on the display device, the sensor control board outputting a transmission signal to the position detector. The sensor control board includes a clock generation circuit which, in operation, generates a clock signal, and a phase adjustment circuit which, in operation, adjusts a phase of the clock signal such that the phase is inverted at each predetermined timing and output an adjusted clock signal as the transmission signal to the position detector.

Abstract: A detecting device includes a substrate, a plurality of detection electrodes provided on the substrate and arrayed in a first direction parallel to the substrate, a plurality of drive electrodes provided on the substrate and arrayed in a second direction intersecting the first direction, a second selection circuit configured to select a plurality of the detection electrodes based on selection signals, a first selection circuit configured to select a plurality of the drive electrodes, a detector coupled to the selected detection electrodes out of the detection electrodes, and a memory storing therein, as a set of output data, a plurality of detection signals output from the selected detection electrodes via the detector by the first selection circuit scanning the drive electrodes in one period when the second selection circuit selects the detection electrodes.

Abstract: A detecting device includes a substrate, a plurality of detection electrodes provided on the substrate and arrayed in a first direction parallel to the substrate, a plurality of drive electrodes provided on the substrate and arrayed in a second direction intersecting the first direction, a second selection circuit configured to select a plurality of the detection electrodes based on selection signals, a first selection circuit configured to select a plurality of the drive electrodes, a detector coupled to the selected detection electrodes out of the detection electrodes, and a memory storing therein, as a set of output data, a plurality of detection signals output from the selected detection electrodes via the detector by the first selection circuit scanning the drive electrodes in one period when the second selection circuit selects the detection electrodes.

Abstract: A display device is provided and includes common electrodes overlapping pixels; common driver configured to supply voltage during a display period and an AC drive signal touch detection during touch detection period; source lines connected to columns of pixels; source driver configured to supply an image signal; gate lines connected to rows of the pixels; select transistors connected between source driver and source lines; and controller configured to supply DC control signal to gate terminals of select transistors during display period, supply an AC control signal to gate terminals of select transistors during touch detection period, wherein AC control signal is synchronous with AC drive signal.

Abstract: A display device is provided and includes pixels and common electrodes overlapping the pixels; gate lines connected to pixels in row; source lines connected to pixels in column; source amplifiers; and a gate drive circuit configured to supply at least one first pulse to the gate lines.

Abstract: A display device is provided and includes pixels and common electrodes overlapping the pixels; gate lines connected to pixels in row; source lines connected to pixels in column; source amplifiers; and a gate drive circuit configured to supply at least one first pulse to the gate lines.

Abstract: According to one embodiment, a display device comprises a common electrode driver configured to supply to common electrodes a display voltage during a display period and a touch detection drive signal during a touch detection period, a source amplifier configured to supply an image signal to source lines, a gate driver configured to supply to gate lines a scanning signal during a display period and a guard signal during a touch detection period, and switches configured to connect the source lines and the common electrodes during a touch detection period.

Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, and a first drive module. A first source line is located between a first divisional electrode and a second divisional electrode. One frame period includes a first display period, a second display period, a sense period, and a first pre-charge period. The first drive module supplies a first image signal having a first polarity to the first source line in the first display period, supplies a first pre-charge signal having a second polarity to the first source line in the first pre-charge period, and supplies the first image signal having the first polarity to the first source line in the second display period.

Abstract: According to one embodiment, a display device comprises a common electrode driver configured to supply to common electrodes a display voltage during a display period and a touch detection drive signal during a touch detection period, a source amplifier configured to supply an image signal to source lines, a gate driver configured to supply to gate lines a scanning signal during a display period and a guard signal during a touch detection period, and switches configured to connect the source lines and the common electrodes during a touch detection period.

Abstract: A display device includes, on a TFT substrate, a driver IC having a first bump and a second bump, a first terminal and a second terminal connecting respectively to the first bump and the second bump, and wiring interconnecting the first terminal and the second terminal. The driver IC also includes a resistance detection circuit that detects resistance between the first bump and the second bump.

Abstract: A display device comprises gate lines extending in a first direction, drain lines extending in a second direction, common electrodes extending in the second direction, and a drive circuit. The common electrodes are configured to be partitioned over drain lines of pixels of a specific color and to be used also as touch panel scan electrodes. The drive circuit is configured so that write periods for driving the gate lines and touch sensing periods for driving the scan electrodes are alternately repeated in each frame period, signal polarity of drain lines for colors other than the specific color is inverted every frame, signal polarity of drain lines for the specific color is inverted at a cycle shorter than one frame, and the cycle of the signal polarity inversion of the drain lines for the specific color can be changed.

Abstract: A bidirectional shift register capable of performing a stable shift operation in both directions and an image display device using the same are provided. In forward shift operation, when reference point N1 is at H level, (n+4)-th unit register circuit as a rear stage of the bidirectional shift register outputs pulse G(n+4) in synchronization with clock pulse V(n+4) inputted to (n+4)-th unit register circuit. A backward direction trigger signal VSTB is generated not only at the time of start of backward shift, but also, for example, in period (time t4 to t5) of one-phase clock immediately after G(n+4) is outputted in vertical blanking interval of the forward shift. The backward direction trigger signal VSTB is inputted to gate of a transistor provided to set reference point N1 of (n+4)-th unit register circuit to H level at the time of start of the backward shift.

Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, and a first drive module. A first source line is located between a first divisional electrode and a second divisional electrode. One frame period includes a first display period, a second display period, a sense period, and a first pre-charge period. The first drive module supplies a first image signal having a first polarity to the first source line in the first display period, supplies a first pre-charge signal having a second polarity to the first source line in the first pre-charge period, and supplies the first image signal having the first polarity to the first source line in the second display period.

Abstract: A bidirectional shift register capable of performing a stable shift operation in both directions and an image display device using the same are provided. In forward shift operation, when reference point N1 is at H level, (n+4)-th unit register circuit as a rear stage of the bidirectional shift register outputs pulse G(n+4) in synchronization with clock pulse V(n+4) inputted to (n+4)-th unit register circuit. A backward direction trigger signal VSTB is generated not only at the time of start of backward shift, but also, for example, in period (time t4 to t5) of one-phase clock immediately after G(n+4) is outputted in vertical blanking interval of the forward shift. The backward direction trigger signal VSTB is inputted to gate of a transistor provided to set reference point N1 of (n+4)-th unit register circuit to H level at the time of start of the backward shift.

Abstract: A bidirectional shift register capable of performing a stable shift operation in both directions and an image display device using the same are provided. In forward shift operation, when reference point N1 is at H level, (n+4)-th unit register circuit as a rear stage of the bidirectional shift register outputs pulse G(n+4) in synchronization with clock pulse V (n+4) inputted to (n+4)-th unit register circuit. A backward direction trigger signal VSTB is generated not only at the time of start of backward shift, but also, for example, in period (time t4 to t5) of one-phase clock immediately after G(n+4) is outputted in vertical blanking interval of the forward shift. The backward direction trigger signal VSTB is inputted to gate of a transistor provided to set reference point N1 of (n+4)-th unit register circuit to H level at the time of start of the backward shift.

Abstract: A display device comprises gate lines extending in a first direction, drain lines extending in a second direction, common electrodes extending in the second direction, and a drive circuit. The common electrodes are configured to be partitioned over drain lines of pixels of a specific color and to be used also as touch panel scan electrodes. The drive circuit is configured so that write periods for driving the gate lines and touch sensing periods for driving the scan electrodes are alternately repeated in each frame period, signal polarity of drain lines for colors other than the specific color is inverted every frame, signal polarity of drain lines for the specific color is inverted at a cycle shorter than one frame, and the cycle of the signal polarity inversion of the drain lines for the specific color can be changed.

Abstract: A driver circuit including a DA converting circuit that converts video data input from the outside to a grayscale voltage; an amplifying circuit that amplifies the grayscale voltage; and a switch circuit that selects the grayscale voltage output from the amplifying circuit and a predetermined voltage as a voltage that is output to the image line. When video data indicating a minimum grayscale, the switch circuit outputs the predetermined voltage to the image line, and when video data indicating a grayscale other than the minimum grayscale is input, the switch circuit outputs the grayscale voltage output from the amplifying circuit to the image line. The predetermined voltage allows a voltage of the pixel electrode and a voltage of the counter electrode after passage of the writing of the image voltage to be coincident with each other.